Kotsutsubo

Eri, a high school student, lives a low-profile life compared to her friend Mitsuko, who is the object of their teacher Ichida’s romantic interest. To shield Mitsuko from these unwanted attentions, Eri devises a unique plan: she seeks out a cursed funerary urn, believed to hold ashes that bring death, and intends to give these ashes to the teacher.